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Lecture notes

Class notes CPA

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Class 12th science notes

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Biology: Study of living organisms.

Cell: Basic unit of life.

Cell Types: Prokaryotic and Eukaryotic.

Photosynthesis: Plants make food using sunlight.

Respiration: Process of releasing energy from food.

DNA: Genetic material carrying information.

Tissues: Group of similar cells performing a function.

Organs: Structure made of tissues.

Human Systems: Digestive, Respiratory, Circulatory, Nervous.

Ecosystem: Interaction between living and non-living things.

Food Chain: Transfer of energy from one organism to another.

Reproduction: Process of producing offspring.

Genetics: Study of heredity and variation.

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March 17, 2026
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2025/2026
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Lecture notes
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Science
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